Sensors

A sensor is a device that produces an output signal to detect a physical phenomenon.

In its broadest definition, a sensor is a device, module, machine or subsystem that detects events or changes in its environment and sends the information to other electronics, often a computer processor. The sensor is always used in conjunction with other electronics.

sensors are used in everyday objects such as touch-sensitive elevator buttons (touch sensor) and lamps that dim or glow when the base is touched, which most people will never know about. With the development of micromachines and easy-to-use microcontroller platforms, sensor applications have expanded beyond traditional measurements of temperature, pressure, and flow.

A good sensor obeys the following rules:

• it is sensitive to the property being measured
• it is not sensitive to any other property likely to occur in its application
• it does not affect the property being measured.

Types of errors:

• Chemical sensor
• Biosensor
• Neuromorphic sensors
• MOS sensors
• Biochemical sensors
• Image sensors
• Monitoring sensors